PaleoDB taxon number: 47868
Alternative combinations: Mastodon matthewi, Miomastodon matthewi, Pliomastodon matthewi
Synonyms: Mammut nevadanus (no. 47870), Pliomastodon nevadanus (no. 50577), Pliomastodon sellardsi Simpson 1930 (no. 50578), Pliomastodon vexillarius Matthew 1930 (no. 50579)
Full reference: H. F. Osborn. 1921. The evolution, phylogeny, and classification of the Proboscidea. American Museum Novitates 1:1-15
- Mammut matthewi: Its type locality is Aphelops Draw Quarries, which is in a Hemphillian terrestrial horizon in the Snake Creek Formation of Nebraska
- Mammut nevadanus: Its type locality is Thousand Creek, which is in a Hemphillian terrestrial horizon in Nevada.
- Pliomastodon sellardsi: UF/FGS 3822, a mandible. Its type locality is American Cyanimid Company, which is in a Serravallian marginal marine sandstone in the Peace River Formation of Florida.
- Pliomastodon vexillarius: Its type locality is North Dome (Pliomastodon Locality), which is in a Blancan terrestrial horizon in the San Joaquin Formation of California.
Ecology: scansorial insectivore
Average measurements (in mm): M1 90.0 x 65.7, M2 115.0 x 77.5, M3 179.0 x 80.0